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Finding the Fourth Proportional to 66,886.20, 100,329.30 and 60,325.20

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Solution

The fourth proportional to 66,886.20, 100,329.30 and 60,325.20 is: 90,487.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,886.20 : 100,329.30 = 60,325.20 : x
  2. Step 2: Convert to fraction form
    66,886.20/100,329.30 = 60,325.20/x
  3. Step 3: Cross multiply
    66,886.20x = 100,329.30 × 60,325.20
  4. Step 4: Simplify right side
    66,886.20x = 6,052,385,088.36
  5. Step 5: Solve for x
    x = 6,052,385,088.36/66,886.20
  6. Step 6: Final answer
    x = 90,487.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.